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10. What causes sun burn?
A. Lower wavelength
B. Higher wavelength
C. Low frequency
D. High frequency​


Sagot :

Answer:

A. Shorter wavelength

Explanation:

UVA rays cause tanning, and the shorter wavelengths of UVA also cause sunburn. There is no such thing as a safe or healthy tan. UVA radiation is proven to contribute to the development of skin cancer.